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<FONT color="green">001</FONT>    /*<a name="line.1"></a>
<FONT color="green">002</FONT>     * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
<FONT color="green">003</FONT>     * contributor license agreements.  See the NOTICE file distributed with<a name="line.3"></a>
<FONT color="green">004</FONT>     * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<FONT color="green">005</FONT>     * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a>
<FONT color="green">006</FONT>     * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<FONT color="green">007</FONT>     * the License.  You may obtain a copy of the License at<a name="line.7"></a>
<FONT color="green">008</FONT>     *<a name="line.8"></a>
<FONT color="green">009</FONT>     *     http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<FONT color="green">010</FONT>     *<a name="line.10"></a>
<FONT color="green">011</FONT>     * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<FONT color="green">012</FONT>     * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<FONT color="green">013</FONT>     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<FONT color="green">014</FONT>     * See the License for the specific language governing permissions and<a name="line.14"></a>
<FONT color="green">015</FONT>     * limitations under the License.<a name="line.15"></a>
<FONT color="green">016</FONT>     */<a name="line.16"></a>
<FONT color="green">017</FONT>    package org.apache.commons.configuration.tree;<a name="line.17"></a>
<FONT color="green">018</FONT>    <a name="line.18"></a>
<FONT color="green">019</FONT>    import java.util.ArrayList;<a name="line.19"></a>
<FONT color="green">020</FONT>    import java.util.Collection;<a name="line.20"></a>
<FONT color="green">021</FONT>    import java.util.Collections;<a name="line.21"></a>
<FONT color="green">022</FONT>    import java.util.HashMap;<a name="line.22"></a>
<FONT color="green">023</FONT>    import java.util.Iterator;<a name="line.23"></a>
<FONT color="green">024</FONT>    import java.util.LinkedList;<a name="line.24"></a>
<FONT color="green">025</FONT>    import java.util.List;<a name="line.25"></a>
<FONT color="green">026</FONT>    import java.util.Map;<a name="line.26"></a>
<FONT color="green">027</FONT>    <a name="line.27"></a>
<FONT color="green">028</FONT>    import org.apache.commons.configuration.ConfigurationRuntimeException;<a name="line.28"></a>
<FONT color="green">029</FONT>    <a name="line.29"></a>
<FONT color="green">030</FONT>    /**<a name="line.30"></a>
<FONT color="green">031</FONT>     * &lt;p&gt;<a name="line.31"></a>
<FONT color="green">032</FONT>     * A default implementation of the {@code ConfigurationNode} interface.<a name="line.32"></a>
<FONT color="green">033</FONT>     * &lt;/p&gt;<a name="line.33"></a>
<FONT color="green">034</FONT>     *<a name="line.34"></a>
<FONT color="green">035</FONT>     * @since 1.3<a name="line.35"></a>
<FONT color="green">036</FONT>     * @author &lt;a<a name="line.36"></a>
<FONT color="green">037</FONT>     * href="http://commons.apache.org/configuration/team-list.html"&gt;Commons<a name="line.37"></a>
<FONT color="green">038</FONT>     * Configuration team&lt;/a&gt;<a name="line.38"></a>
<FONT color="green">039</FONT>     * @version $Id: DefaultConfigurationNode.java 1301991 2012-03-17 20:18:02Z sebb $<a name="line.39"></a>
<FONT color="green">040</FONT>     */<a name="line.40"></a>
<FONT color="green">041</FONT>    public class DefaultConfigurationNode implements ConfigurationNode, Cloneable<a name="line.41"></a>
<FONT color="green">042</FONT>    {<a name="line.42"></a>
<FONT color="green">043</FONT>        /** Stores the children of this node. */<a name="line.43"></a>
<FONT color="green">044</FONT>        private SubNodes children;<a name="line.44"></a>
<FONT color="green">045</FONT>    <a name="line.45"></a>
<FONT color="green">046</FONT>        /** Stores the attributes of this node. */<a name="line.46"></a>
<FONT color="green">047</FONT>        private SubNodes attributes;<a name="line.47"></a>
<FONT color="green">048</FONT>    <a name="line.48"></a>
<FONT color="green">049</FONT>        /** Stores a reference to this node's parent. */<a name="line.49"></a>
<FONT color="green">050</FONT>        private ConfigurationNode parent;<a name="line.50"></a>
<FONT color="green">051</FONT>    <a name="line.51"></a>
<FONT color="green">052</FONT>        /** Stores the value of this node. */<a name="line.52"></a>
<FONT color="green">053</FONT>        private Object value;<a name="line.53"></a>
<FONT color="green">054</FONT>    <a name="line.54"></a>
<FONT color="green">055</FONT>        /** Stores the reference. */<a name="line.55"></a>
<FONT color="green">056</FONT>        private Object reference;<a name="line.56"></a>
<FONT color="green">057</FONT>    <a name="line.57"></a>
<FONT color="green">058</FONT>        /** Stores the name of this node. */<a name="line.58"></a>
<FONT color="green">059</FONT>        private String name;<a name="line.59"></a>
<FONT color="green">060</FONT>    <a name="line.60"></a>
<FONT color="green">061</FONT>        /** Stores a flag if this is an attribute. */<a name="line.61"></a>
<FONT color="green">062</FONT>        private boolean attribute;<a name="line.62"></a>
<FONT color="green">063</FONT>    <a name="line.63"></a>
<FONT color="green">064</FONT>        /**<a name="line.64"></a>
<FONT color="green">065</FONT>         * Creates a new uninitialized instance of {@code DefaultConfigurationNode}.<a name="line.65"></a>
<FONT color="green">066</FONT>         */<a name="line.66"></a>
<FONT color="green">067</FONT>        public DefaultConfigurationNode()<a name="line.67"></a>
<FONT color="green">068</FONT>        {<a name="line.68"></a>
<FONT color="green">069</FONT>            this(null);<a name="line.69"></a>
<FONT color="green">070</FONT>        }<a name="line.70"></a>
<FONT color="green">071</FONT>    <a name="line.71"></a>
<FONT color="green">072</FONT>        /**<a name="line.72"></a>
<FONT color="green">073</FONT>         * Creates a new instance of {@code DefaultConfigurationNode} and<a name="line.73"></a>
<FONT color="green">074</FONT>         * initializes it with the node name.<a name="line.74"></a>
<FONT color="green">075</FONT>         *<a name="line.75"></a>
<FONT color="green">076</FONT>         * @param name the name of this node<a name="line.76"></a>
<FONT color="green">077</FONT>         */<a name="line.77"></a>
<FONT color="green">078</FONT>        public DefaultConfigurationNode(String name)<a name="line.78"></a>
<FONT color="green">079</FONT>        {<a name="line.79"></a>
<FONT color="green">080</FONT>            this(name, null);<a name="line.80"></a>
<FONT color="green">081</FONT>        }<a name="line.81"></a>
<FONT color="green">082</FONT>    <a name="line.82"></a>
<FONT color="green">083</FONT>        /**<a name="line.83"></a>
<FONT color="green">084</FONT>         * Creates a new instance of {@code DefaultConfigurationNode} and<a name="line.84"></a>
<FONT color="green">085</FONT>         * initializes it with the name and a value.<a name="line.85"></a>
<FONT color="green">086</FONT>         *<a name="line.86"></a>
<FONT color="green">087</FONT>         * @param name the node's name<a name="line.87"></a>
<FONT color="green">088</FONT>         * @param value the node's value<a name="line.88"></a>
<FONT color="green">089</FONT>         */<a name="line.89"></a>
<FONT color="green">090</FONT>        public DefaultConfigurationNode(String name, Object value)<a name="line.90"></a>
<FONT color="green">091</FONT>        {<a name="line.91"></a>
<FONT color="green">092</FONT>            setName(name);<a name="line.92"></a>
<FONT color="green">093</FONT>            setValue(value);<a name="line.93"></a>
<FONT color="green">094</FONT>            initSubNodes();<a name="line.94"></a>
<FONT color="green">095</FONT>        }<a name="line.95"></a>
<FONT color="green">096</FONT>    <a name="line.96"></a>
<FONT color="green">097</FONT>        /**<a name="line.97"></a>
<FONT color="green">098</FONT>         * Returns the name of this node.<a name="line.98"></a>
<FONT color="green">099</FONT>         *<a name="line.99"></a>
<FONT color="green">100</FONT>         * @return the name of this node<a name="line.100"></a>
<FONT color="green">101</FONT>         */<a name="line.101"></a>
<FONT color="green">102</FONT>        public String getName()<a name="line.102"></a>
<FONT color="green">103</FONT>        {<a name="line.103"></a>
<FONT color="green">104</FONT>            return name;<a name="line.104"></a>
<FONT color="green">105</FONT>        }<a name="line.105"></a>
<FONT color="green">106</FONT>    <a name="line.106"></a>
<FONT color="green">107</FONT>        /**<a name="line.107"></a>
<FONT color="green">108</FONT>         * Sets the name of this node.<a name="line.108"></a>
<FONT color="green">109</FONT>         *<a name="line.109"></a>
<FONT color="green">110</FONT>         * @param name the new name<a name="line.110"></a>
<FONT color="green">111</FONT>         */<a name="line.111"></a>
<FONT color="green">112</FONT>        public void setName(String name)<a name="line.112"></a>
<FONT color="green">113</FONT>        {<a name="line.113"></a>
<FONT color="green">114</FONT>            checkState();<a name="line.114"></a>
<FONT color="green">115</FONT>            this.name = name;<a name="line.115"></a>
<FONT color="green">116</FONT>        }<a name="line.116"></a>
<FONT color="green">117</FONT>    <a name="line.117"></a>
<FONT color="green">118</FONT>        /**<a name="line.118"></a>
<FONT color="green">119</FONT>         * Returns the value of this node.<a name="line.119"></a>
<FONT color="green">120</FONT>         *<a name="line.120"></a>
<FONT color="green">121</FONT>         * @return the value of this node<a name="line.121"></a>
<FONT color="green">122</FONT>         */<a name="line.122"></a>
<FONT color="green">123</FONT>        public Object getValue()<a name="line.123"></a>
<FONT color="green">124</FONT>        {<a name="line.124"></a>
<FONT color="green">125</FONT>            return value;<a name="line.125"></a>
<FONT color="green">126</FONT>        }<a name="line.126"></a>
<FONT color="green">127</FONT>    <a name="line.127"></a>
<FONT color="green">128</FONT>        /**<a name="line.128"></a>
<FONT color="green">129</FONT>         * Sets the value of this node.<a name="line.129"></a>
<FONT color="green">130</FONT>         *<a name="line.130"></a>
<FONT color="green">131</FONT>         * @param val the value of this node<a name="line.131"></a>
<FONT color="green">132</FONT>         */<a name="line.132"></a>
<FONT color="green">133</FONT>        public void setValue(Object val)<a name="line.133"></a>
<FONT color="green">134</FONT>        {<a name="line.134"></a>
<FONT color="green">135</FONT>            value = val;<a name="line.135"></a>
<FONT color="green">136</FONT>        }<a name="line.136"></a>
<FONT color="green">137</FONT>    <a name="line.137"></a>
<FONT color="green">138</FONT>        /**<a name="line.138"></a>
<FONT color="green">139</FONT>         * Returns the reference.<a name="line.139"></a>
<FONT color="green">140</FONT>         *<a name="line.140"></a>
<FONT color="green">141</FONT>         * @return the reference<a name="line.141"></a>
<FONT color="green">142</FONT>         */<a name="line.142"></a>
<FONT color="green">143</FONT>        public Object getReference()<a name="line.143"></a>
<FONT color="green">144</FONT>        {<a name="line.144"></a>
<FONT color="green">145</FONT>            return reference;<a name="line.145"></a>
<FONT color="green">146</FONT>        }<a name="line.146"></a>
<FONT color="green">147</FONT>    <a name="line.147"></a>
<FONT color="green">148</FONT>        /**<a name="line.148"></a>
<FONT color="green">149</FONT>         * Sets the reference.<a name="line.149"></a>
<FONT color="green">150</FONT>         *<a name="line.150"></a>
<FONT color="green">151</FONT>         * @param reference the reference object<a name="line.151"></a>
<FONT color="green">152</FONT>         */<a name="line.152"></a>
<FONT color="green">153</FONT>        public void setReference(Object reference)<a name="line.153"></a>
<FONT color="green">154</FONT>        {<a name="line.154"></a>
<FONT color="green">155</FONT>            this.reference = reference;<a name="line.155"></a>
<FONT color="green">156</FONT>        }<a name="line.156"></a>
<FONT color="green">157</FONT>    <a name="line.157"></a>
<FONT color="green">158</FONT>        /**<a name="line.158"></a>
<FONT color="green">159</FONT>         * Returns a reference to this node's parent.<a name="line.159"></a>
<FONT color="green">160</FONT>         *<a name="line.160"></a>
<FONT color="green">161</FONT>         * @return the parent node or &lt;b&gt;null &lt;/b&gt; if this is the root<a name="line.161"></a>
<FONT color="green">162</FONT>         */<a name="line.162"></a>
<FONT color="green">163</FONT>        public ConfigurationNode getParentNode()<a name="line.163"></a>
<FONT color="green">164</FONT>        {<a name="line.164"></a>
<FONT color="green">165</FONT>            return parent;<a name="line.165"></a>
<FONT color="green">166</FONT>        }<a name="line.166"></a>
<FONT color="green">167</FONT>    <a name="line.167"></a>
<FONT color="green">168</FONT>        /**<a name="line.168"></a>
<FONT color="green">169</FONT>         * Sets the parent of this node.<a name="line.169"></a>
<FONT color="green">170</FONT>         *<a name="line.170"></a>
<FONT color="green">171</FONT>         * @param parent the parent of this node<a name="line.171"></a>
<FONT color="green">172</FONT>         */<a name="line.172"></a>
<FONT color="green">173</FONT>        public void setParentNode(ConfigurationNode parent)<a name="line.173"></a>
<FONT color="green">174</FONT>        {<a name="line.174"></a>
<FONT color="green">175</FONT>            this.parent = parent;<a name="line.175"></a>
<FONT color="green">176</FONT>        }<a name="line.176"></a>
<FONT color="green">177</FONT>    <a name="line.177"></a>
<FONT color="green">178</FONT>        /**<a name="line.178"></a>
<FONT color="green">179</FONT>         * Adds a new child to this node.<a name="line.179"></a>
<FONT color="green">180</FONT>         *<a name="line.180"></a>
<FONT color="green">181</FONT>         * @param child the new child<a name="line.181"></a>
<FONT color="green">182</FONT>         */<a name="line.182"></a>
<FONT color="green">183</FONT>        public void addChild(ConfigurationNode child)<a name="line.183"></a>
<FONT color="green">184</FONT>        {<a name="line.184"></a>
<FONT color="green">185</FONT>            children.addNode(child);<a name="line.185"></a>
<FONT color="green">186</FONT>            child.setAttribute(false);<a name="line.186"></a>
<FONT color="green">187</FONT>            child.setParentNode(this);<a name="line.187"></a>
<FONT color="green">188</FONT>        }<a name="line.188"></a>
<FONT color="green">189</FONT>    <a name="line.189"></a>
<FONT color="green">190</FONT>        /**<a name="line.190"></a>
<FONT color="green">191</FONT>         * Returns a list with all children of this node.<a name="line.191"></a>
<FONT color="green">192</FONT>         *<a name="line.192"></a>
<FONT color="green">193</FONT>         * @return a list with all child nodes<a name="line.193"></a>
<FONT color="green">194</FONT>         */<a name="line.194"></a>
<FONT color="green">195</FONT>        public List&lt;ConfigurationNode&gt; getChildren()<a name="line.195"></a>
<FONT color="green">196</FONT>        {<a name="line.196"></a>
<FONT color="green">197</FONT>            return children.getSubNodes();<a name="line.197"></a>
<FONT color="green">198</FONT>        }<a name="line.198"></a>
<FONT color="green">199</FONT>    <a name="line.199"></a>
<FONT color="green">200</FONT>        /**<a name="line.200"></a>
<FONT color="green">201</FONT>         * Returns the number of all children of this node.<a name="line.201"></a>
<FONT color="green">202</FONT>         *<a name="line.202"></a>
<FONT color="green">203</FONT>         * @return the number of all children<a name="line.203"></a>
<FONT color="green">204</FONT>         */<a name="line.204"></a>
<FONT color="green">205</FONT>        public int getChildrenCount()<a name="line.205"></a>
<FONT color="green">206</FONT>        {<a name="line.206"></a>
<FONT color="green">207</FONT>            return children.getSubNodes().size();<a name="line.207"></a>
<FONT color="green">208</FONT>        }<a name="line.208"></a>
<FONT color="green">209</FONT>    <a name="line.209"></a>
<FONT color="green">210</FONT>        /**<a name="line.210"></a>
<FONT color="green">211</FONT>         * Returns a list of all children with the given name.<a name="line.211"></a>
<FONT color="green">212</FONT>         *<a name="line.212"></a>
<FONT color="green">213</FONT>         * @param name the name; can be &lt;b&gt;null &lt;/b&gt;, then all children are returned<a name="line.213"></a>
<FONT color="green">214</FONT>         * @return a list of all children with the given name<a name="line.214"></a>
<FONT color="green">215</FONT>         */<a name="line.215"></a>
<FONT color="green">216</FONT>        public List&lt;ConfigurationNode&gt; getChildren(String name)<a name="line.216"></a>
<FONT color="green">217</FONT>        {<a name="line.217"></a>
<FONT color="green">218</FONT>            return children.getSubNodes(name);<a name="line.218"></a>
<FONT color="green">219</FONT>        }<a name="line.219"></a>
<FONT color="green">220</FONT>    <a name="line.220"></a>
<FONT color="green">221</FONT>        /**<a name="line.221"></a>
<FONT color="green">222</FONT>         * Returns the number of children with the given name.<a name="line.222"></a>
<FONT color="green">223</FONT>         *<a name="line.223"></a>
<FONT color="green">224</FONT>         * @param name the name; can be &lt;b&gt;null &lt;/b&gt;, then the number of all<a name="line.224"></a>
<FONT color="green">225</FONT>         * children is returned<a name="line.225"></a>
<FONT color="green">226</FONT>         * @return the number of child nodes with this name<a name="line.226"></a>
<FONT color="green">227</FONT>         */<a name="line.227"></a>
<FONT color="green">228</FONT>        public int getChildrenCount(String name)<a name="line.228"></a>
<FONT color="green">229</FONT>        {<a name="line.229"></a>
<FONT color="green">230</FONT>            return children.getSubNodes(name).size();<a name="line.230"></a>
<FONT color="green">231</FONT>        }<a name="line.231"></a>
<FONT color="green">232</FONT>    <a name="line.232"></a>
<FONT color="green">233</FONT>        /**<a name="line.233"></a>
<FONT color="green">234</FONT>         * Returns the child node with the given index.<a name="line.234"></a>
<FONT color="green">235</FONT>         *<a name="line.235"></a>
<FONT color="green">236</FONT>         * @param index the index (0-based)<a name="line.236"></a>
<FONT color="green">237</FONT>         * @return the child with this index<a name="line.237"></a>
<FONT color="green">238</FONT>         */<a name="line.238"></a>
<FONT color="green">239</FONT>        public ConfigurationNode getChild(int index)<a name="line.239"></a>
<FONT color="green">240</FONT>        {<a name="line.240"></a>
<FONT color="green">241</FONT>            return children.getNode(index);<a name="line.241"></a>
<FONT color="green">242</FONT>        }<a name="line.242"></a>
<FONT color="green">243</FONT>    <a name="line.243"></a>
<FONT color="green">244</FONT>        /**<a name="line.244"></a>
<FONT color="green">245</FONT>         * Removes the specified child node from this node.<a name="line.245"></a>
<FONT color="green">246</FONT>         *<a name="line.246"></a>
<FONT color="green">247</FONT>         * @param child the node to be removed<a name="line.247"></a>
<FONT color="green">248</FONT>         * @return a flag if a node was removed<a name="line.248"></a>
<FONT color="green">249</FONT>         */<a name="line.249"></a>
<FONT color="green">250</FONT>        public boolean removeChild(ConfigurationNode child)<a name="line.250"></a>
<FONT color="green">251</FONT>        {<a name="line.251"></a>
<FONT color="green">252</FONT>            return children.removeNode(child);<a name="line.252"></a>
<FONT color="green">253</FONT>        }<a name="line.253"></a>
<FONT color="green">254</FONT>    <a name="line.254"></a>
<FONT color="green">255</FONT>        /**<a name="line.255"></a>
<FONT color="green">256</FONT>         * Removes all children with the given name.<a name="line.256"></a>
<FONT color="green">257</FONT>         *<a name="line.257"></a>
<FONT color="green">258</FONT>         * @param childName the name of the children to be removed<a name="line.258"></a>
<FONT color="green">259</FONT>         * @return a flag if at least one child node was removed<a name="line.259"></a>
<FONT color="green">260</FONT>         */<a name="line.260"></a>
<FONT color="green">261</FONT>        public boolean removeChild(String childName)<a name="line.261"></a>
<FONT color="green">262</FONT>        {<a name="line.262"></a>
<FONT color="green">263</FONT>            return children.removeNodes(childName);<a name="line.263"></a>
<FONT color="green">264</FONT>        }<a name="line.264"></a>
<FONT color="green">265</FONT>    <a name="line.265"></a>
<FONT color="green">266</FONT>        /**<a name="line.266"></a>
<FONT color="green">267</FONT>         * Removes all child nodes of this node.<a name="line.267"></a>
<FONT color="green">268</FONT>         */<a name="line.268"></a>
<FONT color="green">269</FONT>        public void removeChildren()<a name="line.269"></a>
<FONT color="green">270</FONT>        {<a name="line.270"></a>
<FONT color="green">271</FONT>            children.clear();<a name="line.271"></a>
<FONT color="green">272</FONT>        }<a name="line.272"></a>
<FONT color="green">273</FONT>    <a name="line.273"></a>
<FONT color="green">274</FONT>        /**<a name="line.274"></a>
<FONT color="green">275</FONT>         * Checks if this node is an attribute node.<a name="line.275"></a>
<FONT color="green">276</FONT>         *<a name="line.276"></a>
<FONT color="green">277</FONT>         * @return a flag if this is an attribute node<a name="line.277"></a>
<FONT color="green">278</FONT>         */<a name="line.278"></a>
<FONT color="green">279</FONT>        public boolean isAttribute()<a name="line.279"></a>
<FONT color="green">280</FONT>        {<a name="line.280"></a>
<FONT color="green">281</FONT>            return attribute;<a name="line.281"></a>
<FONT color="green">282</FONT>        }<a name="line.282"></a>
<FONT color="green">283</FONT>    <a name="line.283"></a>
<FONT color="green">284</FONT>        /**<a name="line.284"></a>
<FONT color="green">285</FONT>         * Sets the attribute flag. Note: this method can only be called if the node<a name="line.285"></a>
<FONT color="green">286</FONT>         * is not already part of a node hierarchy.<a name="line.286"></a>
<FONT color="green">287</FONT>         *<a name="line.287"></a>
<FONT color="green">288</FONT>         * @param f the attribute flag<a name="line.288"></a>
<FONT color="green">289</FONT>         */<a name="line.289"></a>
<FONT color="green">290</FONT>        public void setAttribute(boolean f)<a name="line.290"></a>
<FONT color="green">291</FONT>        {<a name="line.291"></a>
<FONT color="green">292</FONT>            checkState();<a name="line.292"></a>
<FONT color="green">293</FONT>            attribute = f;<a name="line.293"></a>
<FONT color="green">294</FONT>        }<a name="line.294"></a>
<FONT color="green">295</FONT>    <a name="line.295"></a>
<FONT color="green">296</FONT>        /**<a name="line.296"></a>
<FONT color="green">297</FONT>         * Adds the specified attribute to this node.<a name="line.297"></a>
<FONT color="green">298</FONT>         *<a name="line.298"></a>
<FONT color="green">299</FONT>         * @param attr the attribute to be added<a name="line.299"></a>
<FONT color="green">300</FONT>         */<a name="line.300"></a>
<FONT color="green">301</FONT>        public void addAttribute(ConfigurationNode attr)<a name="line.301"></a>
<FONT color="green">302</FONT>        {<a name="line.302"></a>
<FONT color="green">303</FONT>            attributes.addNode(attr);<a name="line.303"></a>
<FONT color="green">304</FONT>            attr.setAttribute(true);<a name="line.304"></a>
<FONT color="green">305</FONT>            attr.setParentNode(this);<a name="line.305"></a>
<FONT color="green">306</FONT>        }<a name="line.306"></a>
<FONT color="green">307</FONT>    <a name="line.307"></a>
<FONT color="green">308</FONT>        /**<a name="line.308"></a>
<FONT color="green">309</FONT>         * Returns a list with the attributes of this node. This list contains<a name="line.309"></a>
<FONT color="green">310</FONT>         * {@code DefaultConfigurationNode} objects, too.<a name="line.310"></a>
<FONT color="green">311</FONT>         *<a name="line.311"></a>
<FONT color="green">312</FONT>         * @return the attribute list, never &lt;b&gt;null &lt;/b&gt;<a name="line.312"></a>
<FONT color="green">313</FONT>         */<a name="line.313"></a>
<FONT color="green">314</FONT>        public List&lt;ConfigurationNode&gt; getAttributes()<a name="line.314"></a>
<FONT color="green">315</FONT>        {<a name="line.315"></a>
<FONT color="green">316</FONT>            return attributes.getSubNodes();<a name="line.316"></a>
<FONT color="green">317</FONT>        }<a name="line.317"></a>
<FONT color="green">318</FONT>    <a name="line.318"></a>
<FONT color="green">319</FONT>        /**<a name="line.319"></a>
<FONT color="green">320</FONT>         * Returns the number of attributes contained in this node.<a name="line.320"></a>
<FONT color="green">321</FONT>         *<a name="line.321"></a>
<FONT color="green">322</FONT>         * @return the number of attributes<a name="line.322"></a>
<FONT color="green">323</FONT>         */<a name="line.323"></a>
<FONT color="green">324</FONT>        public int getAttributeCount()<a name="line.324"></a>
<FONT color="green">325</FONT>        {<a name="line.325"></a>
<FONT color="green">326</FONT>            return attributes.getSubNodes().size();<a name="line.326"></a>
<FONT color="green">327</FONT>        }<a name="line.327"></a>
<FONT color="green">328</FONT>    <a name="line.328"></a>
<FONT color="green">329</FONT>        /**<a name="line.329"></a>
<FONT color="green">330</FONT>         * Returns a list with all attributes of this node with the given name.<a name="line.330"></a>
<FONT color="green">331</FONT>         *<a name="line.331"></a>
<FONT color="green">332</FONT>         * @param name the attribute's name<a name="line.332"></a>
<FONT color="green">333</FONT>         * @return all attributes with this name<a name="line.333"></a>
<FONT color="green">334</FONT>         */<a name="line.334"></a>
<FONT color="green">335</FONT>        public List&lt;ConfigurationNode&gt; getAttributes(String name)<a name="line.335"></a>
<FONT color="green">336</FONT>        {<a name="line.336"></a>
<FONT color="green">337</FONT>            return attributes.getSubNodes(name);<a name="line.337"></a>
<FONT color="green">338</FONT>        }<a name="line.338"></a>
<FONT color="green">339</FONT>    <a name="line.339"></a>
<FONT color="green">340</FONT>        /**<a name="line.340"></a>
<FONT color="green">341</FONT>         * Returns the number of attributes of this node with the given name.<a name="line.341"></a>
<FONT color="green">342</FONT>         *<a name="line.342"></a>
<FONT color="green">343</FONT>         * @param name the name<a name="line.343"></a>
<FONT color="green">344</FONT>         * @return the number of attributes with this name<a name="line.344"></a>
<FONT color="green">345</FONT>         */<a name="line.345"></a>
<FONT color="green">346</FONT>        public int getAttributeCount(String name)<a name="line.346"></a>
<FONT color="green">347</FONT>        {<a name="line.347"></a>
<FONT color="green">348</FONT>            return getAttributes(name).size();<a name="line.348"></a>
<FONT color="green">349</FONT>        }<a name="line.349"></a>
<FONT color="green">350</FONT>    <a name="line.350"></a>
<FONT color="green">351</FONT>        /**<a name="line.351"></a>
<FONT color="green">352</FONT>         * Removes the specified attribute.<a name="line.352"></a>
<FONT color="green">353</FONT>         *<a name="line.353"></a>
<FONT color="green">354</FONT>         * @param node the attribute node to be removed<a name="line.354"></a>
<FONT color="green">355</FONT>         * @return a flag if the attribute could be removed<a name="line.355"></a>
<FONT color="green">356</FONT>         */<a name="line.356"></a>
<FONT color="green">357</FONT>        public boolean removeAttribute(ConfigurationNode node)<a name="line.357"></a>
<FONT color="green">358</FONT>        {<a name="line.358"></a>
<FONT color="green">359</FONT>            return attributes.removeNode(node);<a name="line.359"></a>
<FONT color="green">360</FONT>        }<a name="line.360"></a>
<FONT color="green">361</FONT>    <a name="line.361"></a>
<FONT color="green">362</FONT>        /**<a name="line.362"></a>
<FONT color="green">363</FONT>         * Removes all attributes with the specified name.<a name="line.363"></a>
<FONT color="green">364</FONT>         *<a name="line.364"></a>
<FONT color="green">365</FONT>         * @param name the name<a name="line.365"></a>
<FONT color="green">366</FONT>         * @return a flag if at least one attribute was removed<a name="line.366"></a>
<FONT color="green">367</FONT>         */<a name="line.367"></a>
<FONT color="green">368</FONT>        public boolean removeAttribute(String name)<a name="line.368"></a>
<FONT color="green">369</FONT>        {<a name="line.369"></a>
<FONT color="green">370</FONT>            return attributes.removeNodes(name);<a name="line.370"></a>
<FONT color="green">371</FONT>        }<a name="line.371"></a>
<FONT color="green">372</FONT>    <a name="line.372"></a>
<FONT color="green">373</FONT>        /**<a name="line.373"></a>
<FONT color="green">374</FONT>         * Returns the attribute with the given index.<a name="line.374"></a>
<FONT color="green">375</FONT>         *<a name="line.375"></a>
<FONT color="green">376</FONT>         * @param index the index (0-based)<a name="line.376"></a>
<FONT color="green">377</FONT>         * @return the attribute with this index<a name="line.377"></a>
<FONT color="green">378</FONT>         */<a name="line.378"></a>
<FONT color="green">379</FONT>        public ConfigurationNode getAttribute(int index)<a name="line.379"></a>
<FONT color="green">380</FONT>        {<a name="line.380"></a>
<FONT color="green">381</FONT>            return attributes.getNode(index);<a name="line.381"></a>
<FONT color="green">382</FONT>        }<a name="line.382"></a>
<FONT color="green">383</FONT>    <a name="line.383"></a>
<FONT color="green">384</FONT>        /**<a name="line.384"></a>
<FONT color="green">385</FONT>         * Removes all attributes of this node.<a name="line.385"></a>
<FONT color="green">386</FONT>         */<a name="line.386"></a>
<FONT color="green">387</FONT>        public void removeAttributes()<a name="line.387"></a>
<FONT color="green">388</FONT>        {<a name="line.388"></a>
<FONT color="green">389</FONT>            attributes.clear();<a name="line.389"></a>
<FONT color="green">390</FONT>        }<a name="line.390"></a>
<FONT color="green">391</FONT>    <a name="line.391"></a>
<FONT color="green">392</FONT>        /**<a name="line.392"></a>
<FONT color="green">393</FONT>         * Returns a flag if this node is defined. This means that the node contains<a name="line.393"></a>
<FONT color="green">394</FONT>         * some data.<a name="line.394"></a>
<FONT color="green">395</FONT>         *<a name="line.395"></a>
<FONT color="green">396</FONT>         * @return a flag whether this node is defined<a name="line.396"></a>
<FONT color="green">397</FONT>         */<a name="line.397"></a>
<FONT color="green">398</FONT>        public boolean isDefined()<a name="line.398"></a>
<FONT color="green">399</FONT>        {<a name="line.399"></a>
<FONT color="green">400</FONT>            return getValue() != null || getChildrenCount() &gt; 0<a name="line.400"></a>
<FONT color="green">401</FONT>                    || getAttributeCount() &gt; 0;<a name="line.401"></a>
<FONT color="green">402</FONT>        }<a name="line.402"></a>
<FONT color="green">403</FONT>    <a name="line.403"></a>
<FONT color="green">404</FONT>        /**<a name="line.404"></a>
<FONT color="green">405</FONT>         * Visits this node and all its sub nodes.<a name="line.405"></a>
<FONT color="green">406</FONT>         *<a name="line.406"></a>
<FONT color="green">407</FONT>         * @param visitor the visitor<a name="line.407"></a>
<FONT color="green">408</FONT>         */<a name="line.408"></a>
<FONT color="green">409</FONT>        public void visit(ConfigurationNodeVisitor visitor)<a name="line.409"></a>
<FONT color="green">410</FONT>        {<a name="line.410"></a>
<FONT color="green">411</FONT>            if (visitor == null)<a name="line.411"></a>
<FONT color="green">412</FONT>            {<a name="line.412"></a>
<FONT color="green">413</FONT>                throw new IllegalArgumentException("Visitor must not be null!");<a name="line.413"></a>
<FONT color="green">414</FONT>            }<a name="line.414"></a>
<FONT color="green">415</FONT>    <a name="line.415"></a>
<FONT color="green">416</FONT>            if (!visitor.terminate())<a name="line.416"></a>
<FONT color="green">417</FONT>            {<a name="line.417"></a>
<FONT color="green">418</FONT>                visitor.visitBeforeChildren(this);<a name="line.418"></a>
<FONT color="green">419</FONT>                children.visit(visitor);<a name="line.419"></a>
<FONT color="green">420</FONT>                attributes.visit(visitor);<a name="line.420"></a>
<FONT color="green">421</FONT>                visitor.visitAfterChildren(this);<a name="line.421"></a>
<FONT color="green">422</FONT>            }<a name="line.422"></a>
<FONT color="green">423</FONT>        }<a name="line.423"></a>
<FONT color="green">424</FONT>    <a name="line.424"></a>
<FONT color="green">425</FONT>        /**<a name="line.425"></a>
<FONT color="green">426</FONT>         * Creates a copy of this object. This is not a deep copy, the children are<a name="line.426"></a>
<FONT color="green">427</FONT>         * not cloned.<a name="line.427"></a>
<FONT color="green">428</FONT>         *<a name="line.428"></a>
<FONT color="green">429</FONT>         * @return a copy of this object<a name="line.429"></a>
<FONT color="green">430</FONT>         */<a name="line.430"></a>
<FONT color="green">431</FONT>        @Override<a name="line.431"></a>
<FONT color="green">432</FONT>        public Object clone()<a name="line.432"></a>
<FONT color="green">433</FONT>        {<a name="line.433"></a>
<FONT color="green">434</FONT>            try<a name="line.434"></a>
<FONT color="green">435</FONT>            {<a name="line.435"></a>
<FONT color="green">436</FONT>                DefaultConfigurationNode copy = (DefaultConfigurationNode) super<a name="line.436"></a>
<FONT color="green">437</FONT>                        .clone();<a name="line.437"></a>
<FONT color="green">438</FONT>                copy.initSubNodes();<a name="line.438"></a>
<FONT color="green">439</FONT>                return copy;<a name="line.439"></a>
<FONT color="green">440</FONT>            }<a name="line.440"></a>
<FONT color="green">441</FONT>            catch (CloneNotSupportedException cex)<a name="line.441"></a>
<FONT color="green">442</FONT>            {<a name="line.442"></a>
<FONT color="green">443</FONT>                // should not happen<a name="line.443"></a>
<FONT color="green">444</FONT>                throw new ConfigurationRuntimeException("Cannot clone " + getClass());<a name="line.444"></a>
<FONT color="green">445</FONT>            }<a name="line.445"></a>
<FONT color="green">446</FONT>        }<a name="line.446"></a>
<FONT color="green">447</FONT>    <a name="line.447"></a>
<FONT color="green">448</FONT>        /**<a name="line.448"></a>
<FONT color="green">449</FONT>         * Checks if a modification of this node is allowed. Some properties of a<a name="line.449"></a>
<FONT color="green">450</FONT>         * node must not be changed when the node has a parent. This method checks<a name="line.450"></a>
<FONT color="green">451</FONT>         * this and throws a runtime exception if necessary.<a name="line.451"></a>
<FONT color="green">452</FONT>         */<a name="line.452"></a>
<FONT color="green">453</FONT>        protected void checkState()<a name="line.453"></a>
<FONT color="green">454</FONT>        {<a name="line.454"></a>
<FONT color="green">455</FONT>            if (getParentNode() != null)<a name="line.455"></a>
<FONT color="green">456</FONT>            {<a name="line.456"></a>
<FONT color="green">457</FONT>                throw new IllegalStateException(<a name="line.457"></a>
<FONT color="green">458</FONT>                        "Node cannot be modified when added to a parent!");<a name="line.458"></a>
<FONT color="green">459</FONT>            }<a name="line.459"></a>
<FONT color="green">460</FONT>        }<a name="line.460"></a>
<FONT color="green">461</FONT>    <a name="line.461"></a>
<FONT color="green">462</FONT>        /**<a name="line.462"></a>
<FONT color="green">463</FONT>         * Creates a {@code SubNodes} instance that is used for storing<a name="line.463"></a>
<FONT color="green">464</FONT>         * either this node's children or attributes.<a name="line.464"></a>
<FONT color="green">465</FONT>         *<a name="line.465"></a>
<FONT color="green">466</FONT>         * @param attributes &lt;b&gt;true&lt;/b&gt; if the returned instance is used for<a name="line.466"></a>
<FONT color="green">467</FONT>         * storing attributes, &lt;b&gt;false&lt;/b&gt; for storing child nodes<a name="line.467"></a>
<FONT color="green">468</FONT>         * @return the {@code SubNodes} object to use<a name="line.468"></a>
<FONT color="green">469</FONT>         */<a name="line.469"></a>
<FONT color="green">470</FONT>        protected SubNodes createSubNodes(boolean attributes)<a name="line.470"></a>
<FONT color="green">471</FONT>        {<a name="line.471"></a>
<FONT color="green">472</FONT>            return new SubNodes();<a name="line.472"></a>
<FONT color="green">473</FONT>        }<a name="line.473"></a>
<FONT color="green">474</FONT>    <a name="line.474"></a>
<FONT color="green">475</FONT>        /**<a name="line.475"></a>
<FONT color="green">476</FONT>         * Deals with the reference when a node is removed. This method is called<a name="line.476"></a>
<FONT color="green">477</FONT>         * for each removed child node or attribute. It can be overloaded in sub<a name="line.477"></a>
<FONT color="green">478</FONT>         * classes, for which the reference has a concrete meaning and remove<a name="line.478"></a>
<FONT color="green">479</FONT>         * operations need some update actions. This default implementation is<a name="line.479"></a>
<FONT color="green">480</FONT>         * empty.<a name="line.480"></a>
<FONT color="green">481</FONT>         */<a name="line.481"></a>
<FONT color="green">482</FONT>        protected void removeReference()<a name="line.482"></a>
<FONT color="green">483</FONT>        {<a name="line.483"></a>
<FONT color="green">484</FONT>        }<a name="line.484"></a>
<FONT color="green">485</FONT>    <a name="line.485"></a>
<FONT color="green">486</FONT>        /**<a name="line.486"></a>
<FONT color="green">487</FONT>         * Helper method for initializing the sub nodes objects.<a name="line.487"></a>
<FONT color="green">488</FONT>         */<a name="line.488"></a>
<FONT color="green">489</FONT>        private void initSubNodes()<a name="line.489"></a>
<FONT color="green">490</FONT>        {<a name="line.490"></a>
<FONT color="green">491</FONT>            children = createSubNodes(false);<a name="line.491"></a>
<FONT color="green">492</FONT>            attributes = createSubNodes(true);<a name="line.492"></a>
<FONT color="green">493</FONT>        }<a name="line.493"></a>
<FONT color="green">494</FONT>    <a name="line.494"></a>
<FONT color="green">495</FONT>        /**<a name="line.495"></a>
<FONT color="green">496</FONT>         * An internally used helper class for managing a collection of sub nodes.<a name="line.496"></a>
<FONT color="green">497</FONT>         */<a name="line.497"></a>
<FONT color="green">498</FONT>        protected static class SubNodes<a name="line.498"></a>
<FONT color="green">499</FONT>        {<a name="line.499"></a>
<FONT color="green">500</FONT>            /** Stores a list for the sub nodes. */<a name="line.500"></a>
<FONT color="green">501</FONT>            private List&lt;ConfigurationNode&gt; nodes;<a name="line.501"></a>
<FONT color="green">502</FONT>    <a name="line.502"></a>
<FONT color="green">503</FONT>            /** Stores a map for accessing subnodes by name. */<a name="line.503"></a>
<FONT color="green">504</FONT>            private Map&lt;String, List&lt;ConfigurationNode&gt;&gt; namedNodes;<a name="line.504"></a>
<FONT color="green">505</FONT>    <a name="line.505"></a>
<FONT color="green">506</FONT>            /**<a name="line.506"></a>
<FONT color="green">507</FONT>             * Adds a new sub node.<a name="line.507"></a>
<FONT color="green">508</FONT>             *<a name="line.508"></a>
<FONT color="green">509</FONT>             * @param node the node to add<a name="line.509"></a>
<FONT color="green">510</FONT>             */<a name="line.510"></a>
<FONT color="green">511</FONT>            public void addNode(ConfigurationNode node)<a name="line.511"></a>
<FONT color="green">512</FONT>            {<a name="line.512"></a>
<FONT color="green">513</FONT>                if (node == null || node.getName() == null)<a name="line.513"></a>
<FONT color="green">514</FONT>                {<a name="line.514"></a>
<FONT color="green">515</FONT>                    throw new IllegalArgumentException(<a name="line.515"></a>
<FONT color="green">516</FONT>                            "Node to add must have a defined name!");<a name="line.516"></a>
<FONT color="green">517</FONT>                }<a name="line.517"></a>
<FONT color="green">518</FONT>                node.setParentNode(null);  // reset, will later be set<a name="line.518"></a>
<FONT color="green">519</FONT>    <a name="line.519"></a>
<FONT color="green">520</FONT>                if (nodes == null)<a name="line.520"></a>
<FONT color="green">521</FONT>                {<a name="line.521"></a>
<FONT color="green">522</FONT>                    nodes = new ArrayList&lt;ConfigurationNode&gt;();<a name="line.522"></a>
<FONT color="green">523</FONT>                    namedNodes = new HashMap&lt;String, List&lt;ConfigurationNode&gt;&gt;();<a name="line.523"></a>
<FONT color="green">524</FONT>                }<a name="line.524"></a>
<FONT color="green">525</FONT>    <a name="line.525"></a>
<FONT color="green">526</FONT>                nodes.add(node);<a name="line.526"></a>
<FONT color="green">527</FONT>                List&lt;ConfigurationNode&gt; lst = namedNodes.get(node.getName());<a name="line.527"></a>
<FONT color="green">528</FONT>                if (lst == null)<a name="line.528"></a>
<FONT color="green">529</FONT>                {<a name="line.529"></a>
<FONT color="green">530</FONT>                    lst = new LinkedList&lt;ConfigurationNode&gt;();<a name="line.530"></a>
<FONT color="green">531</FONT>                    namedNodes.put(node.getName(), lst);<a name="line.531"></a>
<FONT color="green">532</FONT>                }<a name="line.532"></a>
<FONT color="green">533</FONT>                lst.add(node);<a name="line.533"></a>
<FONT color="green">534</FONT>            }<a name="line.534"></a>
<FONT color="green">535</FONT>    <a name="line.535"></a>
<FONT color="green">536</FONT>            /**<a name="line.536"></a>
<FONT color="green">537</FONT>             * Removes a sub node.<a name="line.537"></a>
<FONT color="green">538</FONT>             *<a name="line.538"></a>
<FONT color="green">539</FONT>             * @param node the node to remove<a name="line.539"></a>
<FONT color="green">540</FONT>             * @return a flag if the node could be removed<a name="line.540"></a>
<FONT color="green">541</FONT>             */<a name="line.541"></a>
<FONT color="green">542</FONT>            public boolean removeNode(ConfigurationNode node)<a name="line.542"></a>
<FONT color="green">543</FONT>            {<a name="line.543"></a>
<FONT color="green">544</FONT>                if (nodes != null &amp;&amp; node != null &amp;&amp; nodes.contains(node))<a name="line.544"></a>
<FONT color="green">545</FONT>                {<a name="line.545"></a>
<FONT color="green">546</FONT>                    detachNode(node);<a name="line.546"></a>
<FONT color="green">547</FONT>                    nodes.remove(node);<a name="line.547"></a>
<FONT color="green">548</FONT>    <a name="line.548"></a>
<FONT color="green">549</FONT>                    List&lt;ConfigurationNode&gt; lst = namedNodes.get(node.getName());<a name="line.549"></a>
<FONT color="green">550</FONT>                    if (lst != null)<a name="line.550"></a>
<FONT color="green">551</FONT>                    {<a name="line.551"></a>
<FONT color="green">552</FONT>                        lst.remove(node);<a name="line.552"></a>
<FONT color="green">553</FONT>                        if (lst.isEmpty())<a name="line.553"></a>
<FONT color="green">554</FONT>                        {<a name="line.554"></a>
<FONT color="green">555</FONT>                            namedNodes.remove(node.getName());<a name="line.555"></a>
<FONT color="green">556</FONT>                        }<a name="line.556"></a>
<FONT color="green">557</FONT>                    }<a name="line.557"></a>
<FONT color="green">558</FONT>                    return true;<a name="line.558"></a>
<FONT color="green">559</FONT>                }<a name="line.559"></a>
<FONT color="green">560</FONT>    <a name="line.560"></a>
<FONT color="green">561</FONT>                else<a name="line.561"></a>
<FONT color="green">562</FONT>                {<a name="line.562"></a>
<FONT color="green">563</FONT>                    return false;<a name="line.563"></a>
<FONT color="green">564</FONT>                }<a name="line.564"></a>
<FONT color="green">565</FONT>            }<a name="line.565"></a>
<FONT color="green">566</FONT>    <a name="line.566"></a>
<FONT color="green">567</FONT>            /**<a name="line.567"></a>
<FONT color="green">568</FONT>             * Removes all sub nodes with the given name.<a name="line.568"></a>
<FONT color="green">569</FONT>             *<a name="line.569"></a>
<FONT color="green">570</FONT>             * @param name the name<a name="line.570"></a>
<FONT color="green">571</FONT>             * @return a flag if at least on sub node was removed<a name="line.571"></a>
<FONT color="green">572</FONT>             */<a name="line.572"></a>
<FONT color="green">573</FONT>            public boolean removeNodes(String name)<a name="line.573"></a>
<FONT color="green">574</FONT>            {<a name="line.574"></a>
<FONT color="green">575</FONT>                if (nodes != null &amp;&amp; name != null)<a name="line.575"></a>
<FONT color="green">576</FONT>                {<a name="line.576"></a>
<FONT color="green">577</FONT>                    List&lt;ConfigurationNode&gt; lst = namedNodes.remove(name);<a name="line.577"></a>
<FONT color="green">578</FONT>                    if (lst != null)<a name="line.578"></a>
<FONT color="green">579</FONT>                    {<a name="line.579"></a>
<FONT color="green">580</FONT>                        detachNodes(lst);<a name="line.580"></a>
<FONT color="green">581</FONT>                        nodes.removeAll(lst);<a name="line.581"></a>
<FONT color="green">582</FONT>                        return true;<a name="line.582"></a>
<FONT color="green">583</FONT>                    }<a name="line.583"></a>
<FONT color="green">584</FONT>                }<a name="line.584"></a>
<FONT color="green">585</FONT>                return false;<a name="line.585"></a>
<FONT color="green">586</FONT>            }<a name="line.586"></a>
<FONT color="green">587</FONT>    <a name="line.587"></a>
<FONT color="green">588</FONT>            /**<a name="line.588"></a>
<FONT color="green">589</FONT>             * Removes all sub nodes.<a name="line.589"></a>
<FONT color="green">590</FONT>             */<a name="line.590"></a>
<FONT color="green">591</FONT>            public void clear()<a name="line.591"></a>
<FONT color="green">592</FONT>            {<a name="line.592"></a>
<FONT color="green">593</FONT>                if (nodes != null)<a name="line.593"></a>
<FONT color="green">594</FONT>                {<a name="line.594"></a>
<FONT color="green">595</FONT>                    detachNodes(nodes);<a name="line.595"></a>
<FONT color="green">596</FONT>                    nodes = null;<a name="line.596"></a>
<FONT color="green">597</FONT>                    namedNodes = null;<a name="line.597"></a>
<FONT color="green">598</FONT>                }<a name="line.598"></a>
<FONT color="green">599</FONT>            }<a name="line.599"></a>
<FONT color="green">600</FONT>    <a name="line.600"></a>
<FONT color="green">601</FONT>            /**<a name="line.601"></a>
<FONT color="green">602</FONT>             * Returns the node with the given index. If this index cannot be found,<a name="line.602"></a>
<FONT color="green">603</FONT>             * an {@code IndexOutOfBoundException} exception will be thrown.<a name="line.603"></a>
<FONT color="green">604</FONT>             *<a name="line.604"></a>
<FONT color="green">605</FONT>             * @param index the index (0-based)<a name="line.605"></a>
<FONT color="green">606</FONT>             * @return the sub node at the specified index<a name="line.606"></a>
<FONT color="green">607</FONT>             */<a name="line.607"></a>
<FONT color="green">608</FONT>            public ConfigurationNode getNode(int index)<a name="line.608"></a>
<FONT color="green">609</FONT>            {<a name="line.609"></a>
<FONT color="green">610</FONT>                if (nodes == null)<a name="line.610"></a>
<FONT color="green">611</FONT>                {<a name="line.611"></a>
<FONT color="green">612</FONT>                    throw new IndexOutOfBoundsException("No sub nodes available!");<a name="line.612"></a>
<FONT color="green">613</FONT>                }<a name="line.613"></a>
<FONT color="green">614</FONT>                return nodes.get(index);<a name="line.614"></a>
<FONT color="green">615</FONT>            }<a name="line.615"></a>
<FONT color="green">616</FONT>    <a name="line.616"></a>
<FONT color="green">617</FONT>            /**<a name="line.617"></a>
<FONT color="green">618</FONT>             * Returns a list with all stored sub nodes. The return value is never<a name="line.618"></a>
<FONT color="green">619</FONT>             * &lt;b&gt;null&lt;/b&gt;.<a name="line.619"></a>
<FONT color="green">620</FONT>             *<a name="line.620"></a>
<FONT color="green">621</FONT>             * @return a list with the sub nodes<a name="line.621"></a>
<FONT color="green">622</FONT>             */<a name="line.622"></a>
<FONT color="green">623</FONT>            public List&lt;ConfigurationNode&gt; getSubNodes()<a name="line.623"></a>
<FONT color="green">624</FONT>            {<a name="line.624"></a>
<FONT color="green">625</FONT>                if (nodes == null)<a name="line.625"></a>
<FONT color="green">626</FONT>                {<a name="line.626"></a>
<FONT color="green">627</FONT>                    return Collections.emptyList();<a name="line.627"></a>
<FONT color="green">628</FONT>                }<a name="line.628"></a>
<FONT color="green">629</FONT>                else<a name="line.629"></a>
<FONT color="green">630</FONT>                {<a name="line.630"></a>
<FONT color="green">631</FONT>                    return Collections.unmodifiableList(nodes);<a name="line.631"></a>
<FONT color="green">632</FONT>                }<a name="line.632"></a>
<FONT color="green">633</FONT>            }<a name="line.633"></a>
<FONT color="green">634</FONT>    <a name="line.634"></a>
<FONT color="green">635</FONT>            /**<a name="line.635"></a>
<FONT color="green">636</FONT>             * Returns a list of the sub nodes with the given name. The return value<a name="line.636"></a>
<FONT color="green">637</FONT>             * is never &lt;b&gt;null&lt;/b&gt;.<a name="line.637"></a>
<FONT color="green">638</FONT>             *<a name="line.638"></a>
<FONT color="green">639</FONT>             * @param name the name; if &lt;b&gt;null&lt;/b&gt; is passed, all sub nodes will<a name="line.639"></a>
<FONT color="green">640</FONT>             * be returned<a name="line.640"></a>
<FONT color="green">641</FONT>             * @return all sub nodes with this name<a name="line.641"></a>
<FONT color="green">642</FONT>             */<a name="line.642"></a>
<FONT color="green">643</FONT>            public List&lt;ConfigurationNode&gt; getSubNodes(String name)<a name="line.643"></a>
<FONT color="green">644</FONT>            {<a name="line.644"></a>
<FONT color="green">645</FONT>                if (name == null)<a name="line.645"></a>
<FONT color="green">646</FONT>                {<a name="line.646"></a>
<FONT color="green">647</FONT>                    return getSubNodes();<a name="line.647"></a>
<FONT color="green">648</FONT>                }<a name="line.648"></a>
<FONT color="green">649</FONT>    <a name="line.649"></a>
<FONT color="green">650</FONT>                List&lt;ConfigurationNode&gt; result;<a name="line.650"></a>
<FONT color="green">651</FONT>                if (nodes == null)<a name="line.651"></a>
<FONT color="green">652</FONT>                {<a name="line.652"></a>
<FONT color="green">653</FONT>                    result = null;<a name="line.653"></a>
<FONT color="green">654</FONT>                }<a name="line.654"></a>
<FONT color="green">655</FONT>                else<a name="line.655"></a>
<FONT color="green">656</FONT>                {<a name="line.656"></a>
<FONT color="green">657</FONT>                    result = namedNodes.get(name);<a name="line.657"></a>
<FONT color="green">658</FONT>                }<a name="line.658"></a>
<FONT color="green">659</FONT>    <a name="line.659"></a>
<FONT color="green">660</FONT>                if (result == null)<a name="line.660"></a>
<FONT color="green">661</FONT>                {<a name="line.661"></a>
<FONT color="green">662</FONT>                    return Collections.emptyList();<a name="line.662"></a>
<FONT color="green">663</FONT>                }<a name="line.663"></a>
<FONT color="green">664</FONT>                else<a name="line.664"></a>
<FONT color="green">665</FONT>                {<a name="line.665"></a>
<FONT color="green">666</FONT>                    return Collections.unmodifiableList(result);<a name="line.666"></a>
<FONT color="green">667</FONT>                }<a name="line.667"></a>
<FONT color="green">668</FONT>            }<a name="line.668"></a>
<FONT color="green">669</FONT>    <a name="line.669"></a>
<FONT color="green">670</FONT>            /**<a name="line.670"></a>
<FONT color="green">671</FONT>             * Let the passed in visitor visit all sub nodes.<a name="line.671"></a>
<FONT color="green">672</FONT>             *<a name="line.672"></a>
<FONT color="green">673</FONT>             * @param visitor the visitor<a name="line.673"></a>
<FONT color="green">674</FONT>             */<a name="line.674"></a>
<FONT color="green">675</FONT>            public void visit(ConfigurationNodeVisitor visitor)<a name="line.675"></a>
<FONT color="green">676</FONT>            {<a name="line.676"></a>
<FONT color="green">677</FONT>                if (nodes != null)<a name="line.677"></a>
<FONT color="green">678</FONT>                {<a name="line.678"></a>
<FONT color="green">679</FONT>                    for (Iterator&lt;ConfigurationNode&gt; it = nodes.iterator(); it.hasNext()<a name="line.679"></a>
<FONT color="green">680</FONT>                            &amp;&amp; !visitor.terminate();)<a name="line.680"></a>
<FONT color="green">681</FONT>                    {<a name="line.681"></a>
<FONT color="green">682</FONT>                        it.next().visit(visitor);<a name="line.682"></a>
<FONT color="green">683</FONT>                    }<a name="line.683"></a>
<FONT color="green">684</FONT>                }<a name="line.684"></a>
<FONT color="green">685</FONT>            }<a name="line.685"></a>
<FONT color="green">686</FONT>    <a name="line.686"></a>
<FONT color="green">687</FONT>            /**<a name="line.687"></a>
<FONT color="green">688</FONT>             * This method is called whenever a sub node is removed from this<a name="line.688"></a>
<FONT color="green">689</FONT>             * object. It ensures that the removed node's parent is reset and its<a name="line.689"></a>
<FONT color="green">690</FONT>             * {@code removeReference()} method gets called.<a name="line.690"></a>
<FONT color="green">691</FONT>             *<a name="line.691"></a>
<FONT color="green">692</FONT>             * @param subNode the node to be removed<a name="line.692"></a>
<FONT color="green">693</FONT>             */<a name="line.693"></a>
<FONT color="green">694</FONT>            protected void detachNode(ConfigurationNode subNode)<a name="line.694"></a>
<FONT color="green">695</FONT>            {<a name="line.695"></a>
<FONT color="green">696</FONT>                subNode.setParentNode(null);<a name="line.696"></a>
<FONT color="green">697</FONT>                if (subNode instanceof DefaultConfigurationNode)<a name="line.697"></a>
<FONT color="green">698</FONT>                {<a name="line.698"></a>
<FONT color="green">699</FONT>                    ((DefaultConfigurationNode) subNode).removeReference();<a name="line.699"></a>
<FONT color="green">700</FONT>                }<a name="line.700"></a>
<FONT color="green">701</FONT>            }<a name="line.701"></a>
<FONT color="green">702</FONT>    <a name="line.702"></a>
<FONT color="green">703</FONT>            /**<a name="line.703"></a>
<FONT color="green">704</FONT>             * Detaches a list of sub nodes. This method calls<a name="line.704"></a>
<FONT color="green">705</FONT>             * {@code detachNode()} for each node contained in the list.<a name="line.705"></a>
<FONT color="green">706</FONT>             *<a name="line.706"></a>
<FONT color="green">707</FONT>             * @param subNodes the list with nodes to be detached<a name="line.707"></a>
<FONT color="green">708</FONT>             */<a name="line.708"></a>
<FONT color="green">709</FONT>            protected void detachNodes(Collection&lt;? extends ConfigurationNode&gt; subNodes)<a name="line.709"></a>
<FONT color="green">710</FONT>            {<a name="line.710"></a>
<FONT color="green">711</FONT>                for (ConfigurationNode nd : subNodes)<a name="line.711"></a>
<FONT color="green">712</FONT>                {<a name="line.712"></a>
<FONT color="green">713</FONT>                    detachNode(nd);<a name="line.713"></a>
<FONT color="green">714</FONT>                }<a name="line.714"></a>
<FONT color="green">715</FONT>            }<a name="line.715"></a>
<FONT color="green">716</FONT>        }<a name="line.716"></a>
<FONT color="green">717</FONT>    }<a name="line.717"></a>




























































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